From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Eric Abrahamsen Newsgroups: gmane.emacs.help Subject: Re: Any tricks to speedup nnimap? Date: Sat, 19 Oct 2019 13:56:15 -0700 Message-ID: <875zkk1mkw.fsf@ericabrahamsen.net> References: Mime-Version: 1.0 Content-Type: text/plain Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="256695"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Sat Oct 19 22:56:52 2019 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1iLvmN-0014cJ-Mo for geh-help-gnu-emacs@m.gmane.org; Sat, 19 Oct 2019 22:56:51 +0200 Original-Received: from localhost ([::1]:37924 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iLvmM-0003bU-H1 for geh-help-gnu-emacs@m.gmane.org; Sat, 19 Oct 2019 16:56:50 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:53238) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iLvm2-0003bO-22 for help-gnu-emacs@gnu.org; Sat, 19 Oct 2019 16:56:31 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iLvm1-0005mR-0T for help-gnu-emacs@gnu.org; Sat, 19 Oct 2019 16:56:29 -0400 Original-Received: from 195-159-176-226.customer.powertech.no ([195.159.176.226]:45892 helo=blaine.gmane.org) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iLvm0-0005kt-Pt for help-gnu-emacs@gnu.org; Sat, 19 Oct 2019 16:56:28 -0400 Original-Received: from list by blaine.gmane.org with local (Exim 4.89) (envelope-from ) id 1iLvlx-0014Do-2O for help-gnu-emacs@gnu.org; Sat, 19 Oct 2019 22:56:25 +0200 X-Injected-Via-Gmane: http://gmane.org/ Cancel-Lock: sha1:m7MxrID9DjyP3ZqCTfwHbsqYd30= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 195.159.176.226 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.org gmane.emacs.help:121677 Archived-At: Pankaj Jangid writes: > Hi, > > I am using Gnus to read news and emails. News is fine. Whenever I open > an unread article, it opens in a snap. Really fast. Some prefetch > mechanism is at play. I haven't done anything to speed up news. This is > default behaviour in my Emacs 26.3 > > But when inside an nnimap group, it takes time to open an email. I press > on any email then it connects to server to fetch. Is it possible > to prefetch emails? I want the news like fast behaviour in reading > emails. > > I have tried following things: > > ;; (1) globally > (setq gnus-asynchronous t) > (setq gnus-use-article-prefetch 30) ; this is default Unfortunately, the nnimap backend doesn't support asynchronous calling, so this won't work. I can't immediately think of why nnimap couldn't be made asynchronous, but the work hasn't been done. > ;; (2) under nnimap server section > (nnimap-fetch-partial-articles t) This will only have a noticeable effect if the email has a big attachment or something on it. If it's just a plain text/HTML email, you probably won't notice a speedup. > These (above) two approaches aren't working on emails. > > I have read some articles that recommend "mbsync" and "dovecot". But > that is a dependency on external tools. I would prefer native emacs > approach if it is possible. They aren't really external tools -- well, they're external to Emacs, but Gnus will still behave the same as always. Essentially, going that route is replicating an IMAP server on your local machine, and having Gnus access that server rather than the remote one. That might sound excessive, but actually it works quite well. It is very fast, and has the advantage that you can still do everything you need to with your email while you're offline. Eric